Okay then, could you try running the setup.exe in administrator mode with compatibility set for windows 98?
Right click on the setup.exe file|Properties|Compatibility Tab|Tick the box for Run this program in compatibility mode and a select Windows 98 from the drop box|and at the very bottom of the box tick the Run this program as an administrator|Apply|OK
Next, try to disable any active anti-virus/malware software you have on the system for the duration of the installation; it may be interfering with the setup process. This is just temporary, you will of course need to re-enable protections after you're done installing the software.
Hope that helps!